Turn your iPhone 3G on iOS 4 [Jailbroken] blazingly fast

Is your iPhone 3G running on iOS 4 slow? It might be possible that while jailbreaking iPhone 3G on iOS 4 using redsn0w you have enabled backgrounds to give the icons a nice shadow effect. But the shadow processing consumes large amount of memory on your iPhone 3G making it sluggish in performance. You can disable the backgrounds by editing a file. Just follow the instructions below:

1) SSH in as root and install ericas utilities
2) Navigate to /System/Library/CoreServices/SpringBoard.app
3) Convert the plist we need from binary to xml so you can edit it in a text editor:
plutil -convert xml1 N82AP.plist
4) Edit N82AP.plist file, and change this line:

<key>homescreen-wallpaper</key>
<true/>
5) Save the file, respring (maybe reboot).

to this:

<key>homescreen-wallpaper</key>
<false/>

6) Navigate to settings, general, spotlight and uncheck everything except apps and contacts.

Share your results!